From: Yafang Shao Date: Sun, 5 Sep 2021 14:35:44 +0000 (+0000) Subject: sched/rt: Support sched_stat_runtime tracepoint for RT sched class X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=ed7b564cfdd0668efbd739d0b4e2d67797293f32;p=uclinux-h8%2Flinux.git sched/rt: Support sched_stat_runtime tracepoint for RT sched class The runtime of a RT task has already been there, so we only need to add a tracepoint. One difference between fair task and RT task is that there is no vruntime in RT task. To reuse the sched_stat_runtime tracepoint, '0' is passed as vruntime for RT task. The output of this tracepoint for RT task as follows, stress-9748 [039] d.h. 113.519352: sched_stat_runtime: comm=stress pid=9748 runtime=997573 [ns] vruntime=0 [ns] stress-9748 [039] d.h. 113.520352: sched_stat_runtime: comm=stress pid=9748 runtime=997627 [ns] vruntime=0 [ns] stress-9748 [039] d.h. 113.521352: sched_stat_runtime: comm=stress pid=9748 runtime=998203 [ns] vruntime=0 [ns] Signed-off-by: Yafang Shao Signed-off-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/20210905143547.4668-6-laoar.shao@gmail.com --- diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c index 95a7c3ad2dc3..5d251112e51c 100644 --- a/kernel/sched/rt.c +++ b/kernel/sched/rt.c @@ -1012,6 +1012,8 @@ static void update_curr_rt(struct rq *rq) schedstat_set(curr->stats.exec_max, max(curr->stats.exec_max, delta_exec)); + trace_sched_stat_runtime(curr, delta_exec, 0); + curr->se.sum_exec_runtime += delta_exec; account_group_exec_runtime(curr, delta_exec);